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Finding the Fourth Proportional to 14,627.53, 20,185.90 and 7,913.13

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Solution

The fourth proportional to 14,627.53, 20,185.90 and 7,913.13 is: 10,920.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,627.53 : 20,185.90 = 7,913.13 : x
  2. Step 2: Convert to fraction form
    14,627.53/20,185.90 = 7,913.13/x
  3. Step 3: Cross multiply
    14,627.53x = 20,185.90 × 7,913.13
  4. Step 4: Simplify right side
    14,627.53x = 159,733,650.87
  5. Step 5: Solve for x
    x = 159,733,650.87/14,627.53
  6. Step 6: Final answer
    x = 10,920.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.